EP 2914675 A1 20150909 - METHOD FOR PREVENTING AGGLOMERATION OF CHARGED COLLOIDS WITHOUT LOSS OF SURFACE ACTIVITY
Title (en)
METHOD FOR PREVENTING AGGLOMERATION OF CHARGED COLLOIDS WITHOUT LOSS OF SURFACE ACTIVITY
Title (de)
VERFAHREN ZUR VERHINDERUNG DER AGGLOMERATION VON GELADENEN KOLLOIDEN OHNE VERLUST DER OBERFLÄCHENAKTIVITÄT
Title (fr)
PROCÉDÉ POUR EMPÊCHER L'AGGLOMÉRATION DE COLLOÏDES CHARGÉS SANS PERTE D'ACTIVITÉ DE SURFACE
Publication
Application
Priority
- US 201261721588 P 20121102
- US 2013065290 W 20131016
Abstract (en)
[origin: WO2014070461A1] A method for chemically stabilizing polishing slurries in aqueous suspension to prevent their agglomeration while maintaining their surface activity is disclosed. The method prevents the formation of irreversible particle agglomerates during drying and permits the subsequent re-suspension of dried particles with no impact on the particle size distribution. The stabilization method can be customized based on knowledge of the colloid surface charge at suspension pH conditions, addition of a charged species having like charge to the colloid at the suspension conditions, and control of the concentrations of the charged species and other ions in suspension.
IPC 8 full level
C09G 1/02 (2006.01); B24B 37/04 (2012.01); C09G 1/04 (2006.01); C09K 3/14 (2006.01)
CPC (source: EP US)
B24B 37/04 (2013.01 - EP US); B24B 37/044 (2013.01 - EP US); C09G 1/02 (2013.01 - EP US); C09G 1/04 (2013.01 - US); C09K 3/1436 (2013.01 - EP US); C09K 3/1463 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2014070461 A1 20140508; EP 2914675 A1 20150909; EP 2914675 A4 20161005; EP 3666837 A1 20200617; JP 2016500747 A 20160114; JP 6321022 B2 20180509; KR 102198376 B1 20210104; KR 20150082380 A 20150715; US 10287457 B2 20190514; US 2015275048 A1 20151001
DOCDB simple family (application)
US 2013065290 W 20131016; EP 13850914 A 20131016; EP 20152293 A 20131016; JP 2015540689 A 20131016; KR 20157014262 A 20131016; US 201314437453 A 20131016